03.01.2023 20:04, Eivind Nicolay Evensen wrote: > This might be more related to a bios setting or issue, but I hope > somebody can give me hints in the right direction to remedy or > at least diagnose this issue further. > > I installed more memory in one machine and now I see this > in dmesg: > > real memory = 25769803776 (24576 MB) > avail memory = 8237150208 (7855 MB) > > Real should be right, from before there were two 4 GB dimms in there, > and I inserted two more 8 GB ones. > > Transcribed from BIOS: > > DIMM(s) 1 2 3 > 4 > Installed Size 8192 8192 4096 > 4096 > Enabled Size 8192 8192 4096 4096 > Total Size 24576 > > I was wondering if the reason could be that this machine has been updated > since older versions and bootloader may be old or whatever, so I also tried > booting a linux. However, that also only uses 8 GB, and says (at least in a > way I understand) less about what it can really see. > > This is amd64 FreeBSD 13.1. > > Is there any way I can use the rest of the memory? Or at least find out > which dimms it is actually using?
I was in similar situation once. There was Atom-based hardware setup with CPU not having embedded memory controller; instead, it used memory controller on motherboard. That memory controller had similar limitation. One cannot overcome it. You should specify your hardware.
